Toolchain works fine for most of the device families including 18F but
not for the 18f452 only. I will code  it from scratch, oldschool.

On Thu, Oct 4, 2012 at 9:22 PM, Joe Wronski <jwronski@stillwatereng.net> wr=
ote:
> So why do you think the device or data sheet has a problem?
> It sounds more like the problem is in your toolchain.
>
> Joe W
>
>
>
> On 10/4/2012 8:17 AM, Yigit Turgut wrote:
>> Thanks to all replies but I believe there is a more fundamental
>> problem because ;
>>
>> ADC_8ANA_0REF
>>
>> this config parameter is not recognized by C18/MPLABX thus is not
>> suitable to compile. Something is definitely wrong (:
>>
>> On Thu, Oct 4, 2012 at 2:56 PM, peter green <plugwash@p10link.net> wrote=
:
>>> Yigit Turgut wrote:
>>>> Hi folks,
>>>>
>>>> I have a piece-of-cake question for the most of you ;
>>>>
>>>> For some test purposes I am trying to implement some stuff in a
>>>> 18f452. By referring to datasheet (39564c.pdf ~ 5.7Mb) I think I am
>>>> not able to set the correct bits right. For the initial test I tried
>>>> to use the built-in function of the C18 compiler, my other routines
>>>> work perfectly well except the lousy internal ADC. For the test ;
>>>>
>>>>
>>>> #include <adc.h>
>>>> #include <stdlib.h>
>>>> #include <delays.h>
>>>>
>>>> unsigned int result;
>>>>
>>>> void main( void )
>>>> {
>>>> TRISA =3D 1 ;
>>>>
>>> Ok so you are making bit0 of portA an input and all other bits outputs.
>>> In particular you are making bit1 which you are about to go and try and
>>> use as an analog input an output.
>>>
>>> Setting pins to analog mode does NOT disable the output driver so if
>>> you want to use a pin as an analog input you must have it set as an inp=
ut
>>> in the tris registers.
>>>> TRISB =3D 0;
>>>> LATBbits.LATB6 =3D 0;
>>>>
>>>> OpenADC( ADC_FOSC_32 & ADC_RIGHT_JUST & ADC_8ANA & ADC_CH1 & ADC_INT_O=
FF );
>>>>
>>> Lets take a look at the C18 libraries documentation.
>>> http://www.microchip.com/Microchip.WWW.SecureSoftwareList/secsoftwaredo=
wnload.aspx?device=3Den010014&lang=3Den&ReturnURL=3Dhttp://www.microchip.co=
m/stellent/idcplg?IdcService=3DSS_GET_PAGE&nodeId=3D1406&dDocName=3Den01001=
4#
>>>
>>> According to that document openadc for the "PIC18CXX2, PIC18FXX2,
>>> PIC18FXX8, PIC18FXX39" has two parameters, config and config2. Each of
>>> which is a bitmask created by anding values from various categories. So
>>> your OpenADC call should be.
>>>
>>> OpenADC( ADC_FOSC_32 & ADC_RIGHT_JUST & ADC_8ANA_0REF , ADC_CH1 & ADC_I=
NT_OFF );
>>>
>>>> Delay10TCYx( 5 );
>>>>
>>>> ConvertADC();
>>>>
>>>> while( BusyADC() ){
>>>>      result =3D ReadADC();
>>>>
>>> umm you should be waiting until the ADC stops being busy before reading=
 it.
>>>>      if(result<=3D512){
>>>>          LATBbits.LATB6 =3D 1;
>>>>          Delay10TCYx( 5 );}
>>>> }
>>>> }
>>>>
>>>> Internal ADC of this device is 10bits thus should provide a value
>>>> between 0-1023. Threshold is chosen exactly in the middle thus I can
>>>> check if the routine works by applying 0V and 5V to AN0. The problem
>>>> is ; it doesn't work (chinn chinn). I succeded following the same
>>>> methodology at other devices from Microchip but no luck with the
>>>> 18f452. I think it's an older device thus the datasheet I mentioned
>>>> above might be incompatible at a point or more with latest versions of
>>>> C18 and MpLabX.
>>>>
>>>> Exact error when compiling this unbelievable short code is ;
>>>>
>>>> too few arguments in function call
>>>>
>>>> in the OpenADC function.
>>>>
>>>> When checked out the C18 documents, it is clearly stated that these
>>>> configurations for OpenADC should suffice.
>>>>
>>>> I wanted to have opinions that can save me some time before I believe
>>>> this thing worth digging deeper.
>>>>
>>>> Have a nice day.
>>>>
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